Was it a coyote, with its slender frame and quick movements, or a wolf, majestic and imposing? Coyotes and wolves share many traits, as both belong to the dog family Canidae and the genus Canis ...

But an analysis of their genomes has revealed a surprise: they are all actually one type of wolf, with varying amounts of coyote DNA, a study reported this week (July 27) in Science Advances. “Wolf ...